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O Size Rings

Browse our collection of O size rings here at Ramsdens Jewellery. You can make sure you're looking at the right range for you by using our printable ring size guide. And, if you're between sizes, you might be interested in our N size or P size rings.
9ct Yellow Gold Mum Basket Ring
Ramsdens9ct Yellow Gold Mum Basket Ring
£195.00
Silver Cubic Zirconia Full Eternity Ring by Icesia
RamsdensSilver Cubic Zirconia Full Eternity Ring by Icesia
£15.00
Silver Cubic Zirconia Gemstone Knot Ring by Icesia
RamsdensSilver Cubic Zirconia Gemstone Knot Ring by Icesia
£25.00
Silver Cubic Zirconia Gemstone Half Eternity Ring by Icesia
RamsdensSilver Cubic Zirconia Gemstone Half Eternity Ring by Icesia
£39.00
Silver Cubic Zirconia and Blue Gemstone Solitaire Ring by Icesia
RamsdensSilver Cubic Zirconia and Blue Gemstone Solitaire Ring by Icesia
£75.00
Silver Cubic Zirconia and Blue Gemstone Halo Ring by Icesia
RamsdensSilver Cubic Zirconia and Blue Gemstone Halo Ring by Icesia
£79.00
Silver Square Signet Ring by Icesia
RamsdensSilver Square Signet Ring by Icesia
£149.00
Silver Cubic Zirconia Stone Set Ring by Icesia
RamsdensSilver Cubic Zirconia Stone Set Ring by Icesia
£29.00
Silver Cubic Zirconia and Red Gemstone Cluster Ring by Icesia
RamsdensSilver Cubic Zirconia and Red Gemstone Cluster Ring by Icesia
£49.00
Silver Cubic Zirconia Stoneset Fancy Ring by Icesia
RamsdensSilver Cubic Zirconia Stoneset Fancy Ring by Icesia
£25.00
Silver Cubic Zirconia Single Stone Ring by Icesia
RamsdensSilver Cubic Zirconia Single Stone Ring by Icesia
£45.00
Silver Cubic Zirconia Twist Ring by Icesia
RamsdensSilver Cubic Zirconia Twist Ring by Icesia
£25.00
9ct Yellow Gold 0.05ct Diamond And Sapphire Cluster Ring
Ramsdens9ct Yellow Gold 0.05ct Diamond And Sapphire Cluster Ring
£249.00
9ct Yellow Gold 0.15ct Diamond Rennie Mac Ring
Ramsdens9ct Yellow Gold 0.15ct Diamond Rennie Mac Ring
Was: £319.00
Now: £269.00
Save £50.00 (16%)
9ct Yellow Gold Cubic Zirconia and Green Gemstone Cluster Ring
Ramsdens9ct Yellow Gold Cubic Zirconia and Green Gemstone Cluster Ring
£349.00
18ct White Gold 0.50ct Brilliant Cut Diamond Solitaire Ring
Ramsdens18ct White Gold 0.50ct Brilliant Cut Diamond Solitaire Ring
£649.00
18ct White Gold 0.10ct Brilliant Cut Diamond Wishbone Ring
Ramsdens18ct White Gold 0.10ct Brilliant Cut Diamond Wishbone Ring
£319.00
9ct Yellow Gold 0.10ct Diamond And Sapphire Cluster Ring
Ramsdens9ct Yellow Gold 0.10ct Diamond And Sapphire Cluster Ring
£219.00
18ct Yellow Gold 1.10ct Brilliant Cut Diamond Solitaire Ring
Ramsdens18ct Yellow Gold 1.10ct Brilliant Cut Diamond Solitaire Ring
18ct Yellow Gold 1.87ct Brilliant Cut Diamond Trilogy Ring
Ramsdens18ct Yellow Gold 1.87ct Brilliant Cut Diamond Trilogy Ring
18ct White Gold 0.50ct Brilliant Cut Diamond Half Eternity Ring
Ramsdens18ct White Gold 0.50ct Brilliant Cut Diamond Half Eternity Ring
£549.00
9ct White Gold 1.66ct Brilliant Cut Diamond Cluster Ring
Ramsdens9ct White Gold 1.66ct Brilliant Cut Diamond Cluster Ring
18ct Yellow Gold 0.30ct Trilogy Diamond Ring
Ramsdens18ct Yellow Gold 0.30ct Trilogy Diamond Ring
£499.00
18ct Yellow Gold 0.50ct Brilliant Cut Diamond Trilogy Ring
Ramsdens18ct Yellow Gold 0.50ct Brilliant Cut Diamond Trilogy Ring
£629.00
A UK ring size O has a circumference of 55.1mm, which means it's the equivalent to a US 7 and an EU 54 ⅝. It's a relatively common ring size, which means we typically have an extensive range of styles in this size. However, some of them are one-offs, so it's best to make a quick decision if there's a piece you love!

Because there are so many men's and women's rings in a size O to choose from, you should have no trouble finding a beautiful accessory to suit your needs. Whether you're planning to propose to your beloved and are shopping for an engagement ring in a size O, or you're looking to treat yourself to a size O diamond or gold ring, we'll have just the thing to fit the bill.

These aren't the only rings we stock, either. So, if you would like more options, make sure you check out our entire collection of luxury rings, as we often have pieces that can be resized to fit you perfectly.

Found a men's or women's ring in a size O that you love? Shop online today with free UK delivery. We also offer a 14-day returns period to give you complete peace of mind.